Japan Uni-ball Signo RT1 Gel Pen - 0.38mm Blue Black

Available for Order Ships within 1 - 2 weeks

$3.49

0.28 Baby Pink 0.28 Black 0.28 Blue 0.28 Blue Black 0.28 Green 0.28 Light Blue 0.28 Lime Green 0.28 Orange 0.28 Red 0.28 Violet 0.38 Baby Pink 0.38 Black 0.38 Blue 0.38 Blue Black 0.38 Green 0.38 Light Blue 0.38 Lime Green 0.38 Orange 0.38 Red 0.38 Violet 0.5 Baby Pink 0.5 Black 0.5 Blue 0.5 Blue Black 0.5 Green 0.5 Light Blue 0.5 Lime Green 0.5 Orange 0.5 Red 0.5 Violet

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- Ultra-smooth writing achieved by reducing friction between the pen tip and paper
- Edgeless stainless-steel tip for smoother strokes and improved durability
- Spring-tip mechanism helps prevent ink backflow
- Newly formulated ink offers enhanced smoothness while keeping lines crisp, vivid, and bleed-resistant
- Uses water-based pigment ink with excellent water and light resistance
- Seamless one-motion design with an invisible joint between the grip and barrel
- Sleek, simple shape with a full rubber front grip for comfortable handling
- Available in 0.28 mm, 0.38 mm, and 0.5 mm tip sizes

Brand: Uni Ball

Barcode: 4902778142677

Modal No.: UMN155N38.64

Size: 11×15.4×141.2mm approx.

Manufacturer: Uni Mitsubishi Pencil

Source From: Japan

Made In: Japan

Tip Size: 0.38mm

Ink Color: Blue Black

Compatibility: Uni-ball Signo Knock Gel Pen Refill

Wendy L.Nov 24, 2025

The Team of Kawaii Limited is amazing and I trust the quality of your products

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Jessica B.Dec 7, 2022

Arrived safely and matched description. Thanks!

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Melissa A. A.Sep 20, 2023

Delivery was amazingly fast to the USA ! I'm so satisfied with my purchase. Everything arrived in great condition . I will continue to shop kawaii limited as long as they are selling my favorite brand , San-x . Thank you so much